TEST disequazioni immediate

TEST disequazioni immediate

3rd Grade

24 Qs

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TEST disequazioni immediate

TEST disequazioni immediate

Assessment

Quiz

Mathematics

3rd Grade

Medium

Created by

sergio la malfa

Used 1+ times

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24 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2=1\left|x-2\right|=1  le soluzioni sono

x=2

x=3 e x=2

x=1 e x=3

x=4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  x+1>0\left|x\right|+1>0  

impossibile

per ogni x

 x<1x>1x<-1\vee x>1  

 1<x<1-1<x<1  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x2+1)2x<0\frac{\left(x^2+1\right)}{2-x}<0  

 x>2x>2  

 x<2x<2  

 x<1x>2x<1\vee x>2  

 1<x<21<x<2  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2>0x^2>0  

per ogni x

 R{0}R-\left\{0\right\}  

impossibile

x<0

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2x<0\frac{\left|x\right|}{2-x}<0  

 x<0  x>2x<0\ \vee\ x>2  

 x<2x<2  

 x>2x>2  

 0<x<20<x<2  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Quale delle seguenti condizioni garantisce che la disequazione 
ax2+bx+c≤0
sia impossibile?
Δ>0 e a>0
Δ>0 e a<0
Δ<0 e a>0
Δ<0 e a<0

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

date le condizioni in figura, quale delle seguenti è la soluzione:

x1<x<x2x_1<x<x_2

x =x1=x2x\ =x_1=x_2

Nessuna soluzione

xR{x1=x2}\forall x\in R-\left\{x_1=x_2\right\}

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